WO2020224326A1

WO2020224326A1 - Independent suspension system, and vehicle

Info

Publication number: WO2020224326A1
Application number: PCT/CN2020/079141
Authority: WO
Inventors: 杨浩; 吴星; 吴超; 梁卫刚; 闫志鹏; 童群峰
Original assignee: 浙江盘毂动力科技有限公司
Priority date: 2019-05-09
Filing date: 2020-03-13
Publication date: 2020-11-12
Also published as: CN110281721B; CN110281721A

Abstract

Disclosed is an independent suspension system, comprising: a supporting arm (100); an upper cross arm (200) for pulling an upper portion of the supporting arm (100); a lower cross arm (300) for pulling a lower portion of the supporting arm (100); and an airbag damping support (400), the middle portion of which is arranged on the supporting arm (100), wherein the airbag damping support (400) is provided with a first airbag and a first damper on one side of the supporting arm (100), and the airbag damping support (400) is provided with a second airbag (500) and a second damper (700) on the other side of the supporting arm (100). By means of providing the airbag damping support (400), the first airbag and the second airbag (500) can be located on two sides of the supporting arm (100) so as to expand the safety distance from the first airbag and the second airbag (500) to wheels, such that the vertical motion of the vehicle can be prevented from interfering with the first airbag and the second airbag (500), and the sizes of the first airbag and the second airbag (500) are no longer limited, and the arrangement of the first airbag and the second airbag (500) enables the independent suspension system to bear a larger load. A vehicle using the suspension system is further provided.

Description

Independent suspension system and vehicle

This application claims the priority of the following Chinese patent applications, the entire contents of which are incorporated into this application by reference.

Application number: 201910385667.0

Application date: May 9, 2019

Invention name: an independent suspension system and vehicle

Technical field

The present invention relates to the field of vehicle technology, and more specifically, to an independent suspension system and a vehicle.

Background technique

Suspension is the general term for all the force transmission connecting devices between the vehicle frame and the axle or wheels. The main function of the suspension is to transmit all the forces and moments acting between the wheels and the body. A typical vehicle suspension structure is composed of Composed of elastic element, shock absorber and guiding mechanism, these three parts play the role of buffer, shock absorption and force transmission respectively.

The double wishbone independent suspension is a typical independent suspension. In addition to the above advantages, the structure of the support arm body can be flexibly designed, and the length and arrangement of the upper and lower cross arms can be adjusted to minimize the height of the middle of the vehicle. At the same time, increasing the width of the aisle has improved the vehicle's seating space and the convenience of getting on and off the vehicle, making the application of this type of suspension in large-load commercial vehicles more and more important.

In the existing double wishbone independent suspension using air springs, regardless of the front and rear suspensions, the single-side suspension only installs a single airbag as an elastic element, or does not meet the load requirements, or the airbag itself is too large to affect the entire vehicle chassis Layout.

Therefore, how to improve the load-bearing capacity without affecting the layout of the entire vehicle chassis is an urgent problem for those skilled in the art.

Summary of the invention

In view of this, the technical problem to be solved by the present invention is how to improve the load bearing capacity without affecting the layout of the entire vehicle chassis. To this end, the present invention provides an independent suspension system and a vehicle.

In order to achieve the above objectives, the present invention provides the following technical solutions:

An independent suspension system includes: a support arm; an upper cross arm for traction on the upper part of the support arm; and a lower cross arm for traction on the lower part of the support arm; the independent suspension system also includes a middle part arranged at The airbag shock absorbing bracket on the support arm, the airbag shock absorbing bracket is located on one side of the support arm and is provided with a first airbag and a first shock absorber, and the airbag shock absorbing bracket is located on the other side of the support arm A second airbag and a second shock absorber are provided.

In yet another embodiment of the present invention, the airbag shock absorbing bracket includes: an airbag shock absorbing bracket body provided on the support arm; a second airbag damping bracket extending from the airbag shock absorbing bracket body to one side of the support arm An airbag arm and a second airbag arm extending from the main body of the airbag damping bracket to the other side of the support arm; the first airbag arm is provided with a first airbag for installing the first airbag A support and a first shock absorber support for installing the first shock absorber; the second airbag arm is provided with a second airbag support for installing the second airbag and a mounting station The second shock absorber support of the second shock absorber.

In yet another embodiment of the present invention, the airbag shock-absorbing support body, the first airbag arm and the second airbag arm are in a C-shaped structure; and the end of the first airbag arm and the The end of the second airbag arm is close to the lower cross arm to form an escape space.

In yet another embodiment of the present invention, the first shock absorber support and the first shock absorber support are symmetrically arranged with respect to the center plane of the support arm; the first airbag support and the The second airbag support is symmetrically arranged with respect to the center plane of the support arm.

In yet another embodiment of the present invention, the upper cross arm includes an upper mounting body arranged on the airbag shock-absorbing bracket, and a first upper swing arm and a second upper arm extending from the upper mounting body to both sides A swing arm, and a third upper swing arm connecting the ends of the first upper swing arm and the second upper swing arm; the first upper swing arm is opposite to the third upper swing arm The first corner connected to the frame is provided with a first upper mounting seat at the connecting part; the connecting part of the second upper swing arm and the third upper swing arm is provided with a second corner The second upper mounting seat; the position where the upper mounting body is connected to the airbag shock-absorbing bracket is provided with a third upper mounting seat.

In another embodiment of the present invention, the first upper mounting seat is provided with a first upper spherical hinge; the second upper mounting seat is provided with a second upper spherical hinge; the third upper mounting seat and the airbag The shock-absorbing bracket is connected by the third upper spherical hinge.

In yet another embodiment of the present invention, the lower cross arm includes a lower mounting body disposed under the airbag shock absorber bracket, and a first lower swing arm and a second lower swing arm extending from the lower mounting body to both sides A support arm, and a third lower swing arm connecting the ends of the first lower swing arm and the second lower swing arm; the connecting part of the first lower swing arm and the third lower swing arm is arranged The first corner connected with the vehicle frame is provided with a first lower mounting seat; the connecting part of the second lower swing arm and the third lower swing arm is provided with a second corner provided with a second lower mounting seat; A third lower mounting seat is provided at the position where the lower mounting body is connected to the airbag shock-absorbing bracket.

In another embodiment of the present invention, the first lower mounting seat is provided with a first lower spherical hinge; the second lower mounting seat is provided with a second lower spherical hinge; the third lower mounting seat and the airbag The shock-absorbing bracket is connected by the third lower spherical hinge.

In another embodiment of the present invention, the upper cross arm is an integrated structure; the lower cross arm is an integrated structure; and the airbag shock absorber support is an integrated structure.

In another embodiment of the present invention, the upper cross arm and the lower cross arm have different lengths.

In yet another embodiment of the present invention, a vehicle is disclosed, which includes the independent suspension system described in any one of the above.

It can be seen from the above technical solutions that when the independent suspension system of the present invention is used, the first airbag and the second airbag can be located on both sides of the support arm by setting the airbag damping bracket, thereby expanding the first airbag and the second airbag. The safety distance between the second airbag and the tire prevents interference with the first airbag and the second airbag during the up and down process of the vehicle. The size of the first airbag and the second airbag is no longer limited, and the first airbag and the second airbag make the independent suspension The system can withstand larger loads. Therefore, the independent suspension system of the present invention can break through the limitations of the prior art and can be applied to heavy vehicles.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a schematic diagram of a front view of an independent suspension system provided by an embodiment of the present invention;

Figure 2 is a schematic top view of an independent suspension system provided by an embodiment of the present invention.

In the figure, 100 is the support arm, 200 is the upper cross arm, 300 is the lower cross arm, 400 is the airbag shock absorber bracket, 500 is the second airbag, 700 is the second shock absorber, 201 is the upper mounting body, and 202 is the first One upper swing arm, 203 is the second upper swing arm, 204 is the third upper swing arm, 205 is the first upper mount, 206 is the second upper mount, 303 is the second lower swing arm, and 304 is the The third lower swing arm, 305 is the first lower mounting seat, 306 is the second lower mounting seat, 401 is the main body of the airbag shock absorber bracket, 402 is the first airbag arm, 403 is the second airbag arm, 404 is the first The airbag support, 405 is the second airbag support, 406 is the first shock absorber support, and 407 is the second shock absorber support.

Detailed ways

The core of the present invention is to provide an independent suspension system and a vehicle to improve the load bearing capacity without affecting the layout of the entire vehicle chassis.

In addition, the embodiments shown below do not limit the content of the invention described in the claims in any way. In addition, all the contents of the configuration shown in the following embodiments are not limited to what is necessary as a solution to the invention described in the claims.

Please refer to Figures 1 to 2. The independent suspension system in the embodiment of the present invention includes:

Support arm 100; upper cross arm 200 for traction on the upper part of support arm 100; lower cross arm 300 for traction on the lower part of support arm 100; and airbag shock absorbing bracket 400 arranged on the support arm 100 in the middle, airbag shock absorbing bracket 400 A first airbag and a first shock absorber are provided on one side of the support arm 100, and a second airbag 500 and a second shock absorber 700 are provided on the other side of the support arm 100 for the airbag shock absorbing bracket 400.

When using the independent suspension system of the present invention, the first airbag and the second airbag 500 can be located on both sides of the support arm 100 by setting the airbag damping bracket 400, thereby expanding the relationship between the first and second airbags 500 and the tires. The safety distance prevents interference with the first airbag and the second airbag 500 during the up and down process of the vehicle. The size of the first airbag and the second airbag 500 is no longer limited, and the arrangement of the first airbag and the second airbag makes the independent suspension The frame system can withstand larger loads. Therefore, the independent suspension system of the present invention can break through the limitations of the prior art and can be applied to heavy vehicles.

It should be noted that in the embodiment of the present invention, the safety distance between the first airbag and the second airbag 500 and the tire is expanded by providing the airbag damping bracket 400. Therefore, the sizes of the first airbag and the second airbag 500 are no longer limited.

The above-mentioned support arm 100 realizes the connection between the wheel train assembly and the independent suspension system, and the airbag shock absorber bracket 400 is installed on the support arm 100 by bolts to reduce the processing cost of the support arm 100. In order to further ensure the strength of the airbag shock absorbing bracket 400, the airbag shock absorbing bracket 400 is an integrated structure.

In an embodiment of the present invention, the airbag shock absorbing bracket 400 includes: an airbag shock absorbing bracket main body 401 arranged on the supporting arm 100; a first airbag supporting arm 402 extending from the airbag shock absorbing bracket body to one side of the supporting arm 100 And the second airbag support arm 403 extending to the other side of the support arm 100; the first airbag support arm 402 is provided with a first airbag support 404 for installing the first airbag and a The first shock absorber support 406 of the shock absorber; the second airbag support arm 403 is provided with a second airbag support 405 for installing the second airbag 500 and a second shock absorber for installing the second shock absorber 700器Support 407.

By providing the first airbag arm 402 and the second airbag arm 403, the safety distance between the first airbag and the second airbag 500 and the tire can be extended to a greater extent. More preferably, the airbag shock-absorbing support body, the first airbag arm 402 and the second airbag arm 403 in the embodiment of the present invention are in a C-shaped structure. By setting the C-shaped structure, the width of the middle aisle of the vehicle can be further lengthened.

The end of the first airbag arm 402 and the end of the second airbag arm 403 are close to the lower cross arm 300 to form an escape space. By providing the avoidance space, the first airbag and the second airbag 500 can be located in the avoidance space, thereby reducing the spatial height of the entire independent suspension system and reducing the height of the vehicle frame occupied by the entire independent suspension system.

The first shock absorber support 406 and the first shock absorber support 406 are arranged symmetrically about the center plane of the support arm 100; the first airbag support 404 and the second airbag support 405 are symmetric about the center plane of the support arm 100 Layout. The above-mentioned symmetrical arrangement makes the force of the independent suspension system more uniform and prolongs the service life.

The upper cross arm 200 includes an upper mounting body 201 arranged on the airbag damping bracket 400, a first upper swing arm 202 and a second upper swing arm 203 extending from the upper mounting body 201 to both sides, and connected to the first upper The third upper swing arm 204 at the end of the swing arm 202 and the second upper swing arm 203; the connecting part of the first upper swing arm 202 and the third upper swing arm 204 is provided with a frame connected to the frame The first corner is provided with a first upper mounting seat 205; the connecting portion of the second upper swing arm 203 and the third upper swing arm 204 is provided with a second upper mounting seat 206 at the second corner; the upper mounting body 201 A third upper mounting seat is provided at a position connected to the airbag shock-absorbing bracket 400. That is, the upper cross arm 200 has a triangular structure.

The first upper mounting seat 205 is provided with a first upper spherical hinge; the second upper mounting seat 206 is provided with a second upper spherical hinge; the third upper mounting seat is connected with the airbag shock-absorbing bracket 400 through a third upper spherical hinge. By setting the first upper spherical hinge, the second upper spherical hinge and the third upper spherical hinge to connect, the vibration of the vehicle is buffered, and the vehicle has a higher comfort under the effect of the entire vehicle.

The lower cross arm 300 includes a lower mounting body arranged under the airbag shock-absorbing bracket 400, a first lower swing arm 302 and a second lower swing arm 303 extending from the lower mounting body to both sides, and a connection with the first lower swing arm 302 and the third lower swing arm 304 at the end of the second lower swing arm 303; the connecting part of the first lower swing arm 302 and the third lower swing arm 304 is provided with a first corner connected with the frame. The lower mounting seat 305; the connecting part of the second lower swing arm 303 and the third lower swing arm 304 is provided with a second corner provided with a second lower mounting seat 306; the lower mounting body is connected to the airbag damping bracket 400 A third lower mounting seat is provided. That is, the lower cross arm 300 has a triangular structure.

In yet another embodiment of the present invention, the first lower mounting seat 305 is provided with a first lower spherical hinge; the second lower mounting seat 306 is provided with a second lower spherical hinge; the third lower mounting seat and the airbag damping bracket 400 pass through the Three-point spherical hinge connection. By setting the first lower spherical hinge, the second lower spherical hinge and the third lower spherical hinge to connect, the vibration of the vehicle is buffered, and the vehicle has higher comfort under the effect of the entire vehicle.

In addition to the triangular structure, the upper cross arm 200 and the lower cross arm 300 can also be other common structural forms in the art. In order to improve the strength of the upper cross arm 200 and the lower cross arm 300, the upper cross arm is preferably used in the embodiment of the present invention. The arm 200 is an integrated structure; the lower cross arm 300 is an integrated structure. The upper cross arm 200 and the lower cross arm 300 have different lengths. This can reduce the change of tire track during vehicle movement, reduce tire wear and extend service life.

The present invention also discloses a vehicle, which includes the independent suspension system of any one of the above. Since the above-mentioned independent suspension system has the above beneficial effects, a vehicle including the above-mentioned independent suspension system also has corresponding effects, which will not be repeated here.

The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown in this document, but should conform to the widest scope consistent with the principles and novel features disclosed in this document.

Claims

An independent suspension system, comprising: a support arm; an upper cross arm for traction on the upper part of the support arm; and a lower cross arm for traction on the lower part of the support arm; characterized in that the independent suspension system is also It includes an airbag shock absorbing bracket with a middle part arranged on the support arm, the airbag shock absorbing bracket is provided with a first airbag and a first shock absorber on one side of the support arm, and the airbag shock absorbing bracket is located on the support A second airbag and a second shock absorber are provided on the other side of the arm.
The independent suspension system of claim 1, wherein the airbag shock absorbing bracket comprises: an airbag shock absorbing bracket body arranged on the support arm; from the airbag shock absorbing bracket body to the support A first airbag arm extending from one side of the arm and a second airbag arm extending from the main body of the airbag damping bracket to the other side of the support arm; the first airbag arm is provided with a A first airbag support for the first airbag and a first shock absorber support for installing the first shock absorber; the second airbag arm is provided with a second airbag for installing the second airbag A support and a second shock absorber support for installing the second shock absorber.
The independent suspension system according to claim 2, wherein the airbag damping support body, the first airbag arm and the second airbag arm are in a C-shaped structure; and the first airbag The end of the support arm and the end of the second airbag support arm are close to the lower cross arm to form an escape space.
The independent suspension system of claim 3, wherein the first shock absorber support and the first shock absorber support are symmetrically arranged with respect to the center plane of the support arm; An airbag support and the second airbag support are symmetrically arranged with respect to the center plane of the support arm.
The independent suspension system according to claim 1, wherein the upper cross arm comprises an upper mounting body arranged on the airbag shock-absorbing bracket, and a first upper mounting body extending from the upper mounting body to both sides The swing support arm and the second upper swing support arm, and the third upper swing support arm connecting the ends of the first upper swing support arm and the second upper swing support arm; the first upper swing support arm and the first upper swing support arm The connected part of the three upper swing arms is provided with a first corner connected with the frame and a first upper mounting seat; the connected part of the second upper swing arm and the third upper swing arm The second corner is provided with a second upper mounting seat; the position where the upper mounting body is connected to the airbag shock-absorbing bracket is provided with a third upper mounting seat.
The independent suspension system of claim 5, wherein the first upper mounting seat is provided with a first upper spherical hinge; the second upper mounting seat is provided with a second upper spherical hinge; The upper mounting seat is connected with the airbag shock-absorbing bracket through a third upper spherical hinge.
The independent suspension system according to claim 1, wherein the lower cross arm includes a lower mounting body disposed under the airbag shock absorber bracket, and a first lower mounting body extending from the lower mounting body to both sides A swing arm and a second lower swing arm, and a third lower swing arm connecting the ends of the first lower swing arm and the second lower swing arm; the first lower swing arm and the third lower swing arm The first corner of the arm connected to the frame is provided with a first lower mounting seat; the connecting part of the second lower swing arm and the third lower arm is provided with a second corner setting There is a second lower mounting seat; the part where the lower mounting body is connected to the airbag shock-absorbing bracket is provided with a third lower mounting seat.
The independent suspension system of claim 7, wherein the first lower mounting seat is provided with a first lower spherical hinge; the second lower mounting seat is provided with a second lower spherical hinge; The lower mounting seat and the airbag shock-absorbing bracket are connected by a third lower spherical hinge.
The independent suspension system according to any one of claims 1 to 8, wherein the upper cross arm is an integrated structure; the lower cross arm is an integrated structure; the airbag shock absorber bracket is an integrated structure式结构。 Type structure.
The independent suspension system according to any one of claims 1 to 8, wherein the upper cross arm and the lower cross arm have different lengths.
A vehicle, characterized by comprising the independent suspension system according to any one of claims 1 to 10.